/Engine/Source/Runtime/RenderCore/Public/Shader.h
FShaderKey ( const [FSHAHash](API\Runtime\Core\Misc\FSHAHash) & InMaterialShaderMapHash, const [FShaderPipelineType](API\Runtime\RenderCore\FShaderPipelineType) * InShaderPipeline, [FVertexFactoryType](API\Runtime\RenderCore\FVertexFactoryType) * InVertexFactoryType, int32 PermutationId, EShaderPlatform InPlatform )